Finding the Fourth Proportional to 38,490,903.77, 53,117,428.79 and 23,020,988.09
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Solution
The fourth proportional to 38,490,903.77, 53,117,428.79 and 23,020,988.09 is: 31,768,952.55
Step by Step Solution
- Step 1: Write the proportion equation
38,490,903.77 : 53,117,428.79 = 23,020,988.09 : x - Step 2: Convert to fraction form
38,490,903.77/53,117,428.79 = 23,020,988.09/x - Step 3: Cross multiply
38,490,903.77x = 53,117,428.79 × 23,020,988.09 - Step 4: Simplify right side
38,490,903.77x = 1,222,815,695,337,978.50 - Step 5: Solve for x
x = 1,222,815,695,337,978.50/38,490,903.77 - Step 6: Final answer
x = 31,768,952.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.